The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 24, 2010
Filed:
Mar. 30, 2009
Thomas J. Leck, Hockessin, DE (US);
Mack Mcfarland, West Grove, PA (US);
Barbara Haviland Minor, Elkton, MD (US);
John Carl Steichen, Landenberg, PA (US);
Thomas J. Leck, Hockessin, DE (US);
Mack McFarland, West Grove, PA (US);
Barbara Haviland Minor, Elkton, MD (US);
John Carl Steichen, Landenberg, PA (US);
E.I. du Pont de Nemours and Company, Wilmington, DE (US);
Abstract
Disclosed herein are detectable refrigerant compositions, comprising from about 0.001 to about 5 weight percent tracer compositions, which are useful to identify leaking in a vapor compression refrigeration and/or air conditioning system. The presence of the tracers make the refrigerant compositions detectable by chemo/electro-active array, corona discharge, heated diode, electrochemical, photoionization, infrared, ultrasonic and electron capture detectors.